Powershell to replace URLs in text files

url-replace.ps1

Clear-Host

# TODO: Load this hash table from your CSV source (using Import-Csv)
[hashtable] $urls = New-Object hashtable
$urls.Add("https://www.old.com/1", "https://www.new.com/1")
$urls.Add("https://www.old.com/2", "https://www.new.com/2")


# TODO: Change the -Path value here to the desired path 
Get-ChildItem -Path "." -Filter "*.txt" | ForEach-Object {

    $modified = $false

    Write-Host "Scanning: $_"

    $content = Get-Content "$_"

    $urls.Keys | ForEach-Object {
        
        if ($content -ilike "*$_*") {
            $content = $content -ireplace $_, $urls[$_]
            $modified = $true
        }
    }

    if ($modified) {
        # Make a backup copy of the file
        Copy-Item -Path $_ -Destination "$_.bak" 

        # Replace the contents
        $content | Set-Content -Path $_ -ErrorAction Stop
        Write-Host "...Updated: $_"
    }
}